Open AccessFiber coupling efficiency for a Gaussian-beam wave propagating through non-Kolmogorov turbulence
Author(s) -
Chao Zhai,
Liying Tan,
Siyuan Yu,
Jing Ma
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.015242
Subject(s) - physics , turbulence , optics , wave propagation , gaussian beam , gaussian , coupling (piping) , computational physics , spectral density , beam (structure) , mechanics , quantum mechanics , telecommunications , materials science , computer science , metallurgy
Nowadays it has been accepted that the Kolmogorov model is not the only possible turbulent one in the atmosphere, which has been confirmed by the increasing experimental evidence and some results of theoretical investigation. This has prompted the scientist community to study optical propagation in non-Kolmogorov atmospheric turbulence. In this paper, using the method of effective beam parameters and a non-Kolmogorov power spectrum which has a more general power law instead of standard Kolmogorov power law value 11/3 and a more general amplitude factor instead of constant value 0.033, the fiber coupling efficiency for a Gaussian-beam wave has been derived for a horizontal path in both weak and strong fluctuation regimes. And then the influence of spectral power law variations on the fiber coupling efficiency has been analyzed. It is anticipated that this work is helpful to the investigations of atmospheric turbulence and optical wave propagation in the atmospheric turbulence.